Perhaps surprisingly, as the map below shows, beers as cheap as €3 can be found in central Paris. It's not much pricier on the posh river banks, nor on the two islands in the Seine River usually associated with fine (and expensive) dining.

However, if you head out towards the Eiffel Tower in the west then the prices are twice as much as they are in the centre of the city.

In the hip and happening Oberkampf area of town in the east, beers as cheap as €2.50 are on offer.

The MisterGoodBeer site was launched in 2012 after a group of Parisians found themselves tired of paying €8 for a pint of beer.

The map also shows the average cost of the cheapest bars per Metro line, with the cheapest proving to be line 4, where a nearby pint will usually cost just €3.90.

Second most expensive was line 7 at €4.00, followed by lines 2, 3, and 11 at €4.10 on average.

The most expensive lines were 14 and 9, where the cheapest pints still rack up an average of €4.80.